May
May · October · September
United States · 1991–2020
May leads for comfortable weather in Arcadia: typically 26.5°C by day, 13°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.
May · October · September
June · August · July
October · April · November
The weakest month is January, scoring 14 against May’s 76 — days reach only 10.8°C, 13° below the 24°C the score treats as ideal, and nights drop to -1.9°C.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 10.8°C | -1.9°C | 93 mm | 7.1 | 9 h 58 | 14 | Strong coverage |
| February | 13.2°C | -0.4°C | 84 mm | 7.2 | 10 h 49 | 26 | Strong coverage |
| March | 17.6°C | 3.1°C | 100 mm | 8.3 | 11 h 51 | 44 | Strong coverage |
| April | 23°C | 7.7°C | 99 mm | 7.7 | 13 h 03 | 70 | Strong coverage |
| May | 26.5°C | 13°C | 86 mm | 8.4 | 14 h 03 | 76 | Strong coverage |
| June | 30°C | 17.6°C | 103 mm | 7.6 | 14 h 35 | 62 | Strong coverage |
| July | 31.7°C | 19.9°C | 114 mm | 8.7 | 14 h 22 | 50 | Strong coverage |
| August | 30.8°C | 19°C | 115 mm | 7.7 | 13 h 31 | 55 | Strong coverage |
| September | 27.7°C | 15.6°C | 106 mm | 6.9 | 12 h 22 | 73 | Strong coverage |
| October | 22.7°C | 8.8°C | 82 mm | 5.8 | 11 h 13 | 75 | Strong coverage |
| November | 16.8°C | 2.7°C | 89 mm | 6.1 | 10 h 13 | 44 | Strong coverage |
| December | 12.2°C | -0.4°C | 89 mm | 7.2 | 9 h 44 | 22 | Strong coverage |
What has changed
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.1°C28 Jan 1944 | -21.1°C21 Jan 1985 | 70 mm25 Jan 2010 | 221 mm1978 · driest 5 mm in 1907 | 94 |
| February | 28.3°C26 Feb 1977 | -16.7°C5 Feb 1996 | 74 mm2 Feb 1973 | 244 mm2021 · driest 9 mm in 2002 | 94 |
| March | 33.9°C25 Mar 1945 | -15.0°C3 Mar 1980 | 81 mm29 Mar 1991 | 234 mm1975 · driest 29 mm in 1985 | 95 |
| April | 35.0°C25 Apr 1960 | -6.1°C8 Apr 2007 | 110 mm16 Apr 1987 | 227 mm1987 · driest 9 mm in 1976 | 94 |
| May | 37.8°C22 May 1941 | -1.7°C10 May 1906 | 81 mm21 May 1942 | 246 mm1905 · driest 6 mm in 2007 | 95 |
| June | 40.6°C27 Jun 1954 | 3.9°C22 Jun 1992 | 136 mm21 Jun 1972 | 290 mm1909 · driest 5 mm in 2024 | 95 |
| July | 41.7°C29 Jul 1952 | 7.2°C2 Jul 1904 | 105 mm10 Jul 2025 | 287 mm1975 · driest 18 mm in 1990 | 94 |
| August | 40.6°C14 Aug 1943 | 7.2°C30 Aug 1986 | 127 mm30 Aug 1906 | 342 mm1906 · driest 18 mm in 1972 | 93 |
| September | 39.4°C9 Sep 1939 | 1.7°C25 Sep 1983 | 166 mm26 Sep 1956 | 250 mm1956 · driest 0 mm in 2019 | 94 |
| October | 36.7°C5 Oct 1954 | -3.9°C23 Oct 1904 | 167 mm15 Oct 1954 | 356 mm1990 · driest 0 mm in 2000 | 95 |
| November | 30.0°C2 Nov 1974 | -10.6°C26 Nov 1950 | 81 mm21 Nov 1985 | 245 mm1985 · driest 0 mm in 1905 | 94 |
| December | 26.1°C7 Dec 1956 | -17.2°C25 Dec 1983 | 86 mm28 Dec 1958 | 205 mm2018 · driest 13 mm in 1965 | 94 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 20 | 4 | <1 |
| February | <1 | 0 | 16 | 3 | <1 |
| March | 3 | <1 | 10 | 4 | <1 |
| April | 12 | 1 | 2 | 3 | 0 |
| May | 22 | 7 | 0 | 3 | 0 |
| June | 27 | 17 | 0 | 3 | 0 |
| July | 30 | 25 | 0 | 4 | 0 |
| August | 29 | 21 | 0 | 4 | 0 |
| September | 23 | 9 | 0 | 3 | 0 |
| October | 10 | <1 | 2 | 3 | 0 |
| November | 1 | 0 | 12 | 3 | 0 |
| December | <1 | 0 | 19 | 3 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 79); on 2011–2025 it is October (80). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 6% | 24% | 11% | 25% | 8.1–13.7°C |
| February | 10% | 28% | 11% | 32% | 9.8–15.4°C |
| March | 30% | 28% | 12% | 31% | 14.8–20.6°C |
| April | 60% | 25% | 10% | 26% | 21.3–25.1°C |
| May | 70% | 27% | 11% | 31% | 25.2–28.7°C |
| June | 73% | 27% | 10% | 30% | 28.8–32.0°C |
| July | 70% | 30% | 12% | 36% | 30.6–33.4°C |
| August | 74% | 26% | 12% | 28% | 29.7–33.0°C |
| September | 79% | 21% | 9% | 19% | 26.5–30.6°C |
| October | 65% | 18% | 8% | 15% | 21.0–25.0°C |
| November | 29% | 21% | 9% | 19% | 14.7–19.3°C |
| December | 7% | 24% | 11% | 25% | 9.2–14.4°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page